pyeq3 12.1.8 has been released to pypi What is it? pyeq3 is a large collection of equations for Python 3 curve fitting and surface fitting that can output source code in several computing languages and run a genetic algorithm for initial parameter estimation. Comes with cluster, parallel, IPython, GUI, NodeJS, and web-based graphical examples. Includes orthogonal distance and relative error regressions. Where is it? Full source code link: https://github.com/zunzun/pyeq3 What changed? This version updates the User Defined Functions for the most recent Python 3 handling of exec() and eval()